code: def test_clear_event_setup_correctly_with_state(self):
      with gr.Blocks() as demo:
          chatbot = gr.Chatbot([["Hello", "How are you?"]])
          state = gr.State("")
          gr.ClearButton([state, chatbot], scale=1)
  
      clear_event_trigger_state = demo.dependencies.pop()
      assert clear_event_trigger_state["backend_fn"]
  
file_path: gradio/test/test_buttons.py
imports: from unittest.mock import patch
  import pytest
  import gradio
label_desc: Use image node_id 2 for calling the TestClearButton obj's underlying member method code with example usage: obj.test_clear_event_setup_correctly_with_state() without return types